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Contract OI history

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Jan 21, 2028 EXPIRATION

OLN $12.50 Put

OLN280121P00012500

Latest saved OI214Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
OLN $12.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2141070 2026-10-02: 200 OI2026-10-05: 200 OI2026-10-06: 200 OI2026-10-07: 200 OI2026-10-08: 200 OI2026-10-09: 200 OI2026-10-13: 200 OI2026-10-14: 208 OI2026-10-15: 213 OI2026-10-16: 213 OI2026-10-21: 214 OI2026-10-23: 214 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

OLN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2140
Oct 21, 2026214+1
Oct 16, 20262130
Oct 15, 2026213+5
Oct 14, 2026208+8
Oct 13, 20262000
Oct 09, 20262000
Oct 08, 20262000
Oct 07, 20262000
Oct 06, 20262000
Oct 05, 20262000
Oct 02, 2026200No prior observation